Pattern scribing tool



Jan. 1, 1952 C, L ELDH 2,581,179

PATTERN SCRIBING TOOL Filed March 28. 1947 2 SHEETS-SHEET l p J v 15 a 59 INVENITOR.

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H TTYS Jan. 1, 1952 c. L. ELDH 2,581,179

PATTERN SCRIBING TOOL Filed March 28, 1947 2 SHEETS-'SHEET 2 INVENTOR.C. L. EL 0']:

HTTYS Patented Jan. 1, 1952 UNITED STATES PATENT OFFICE PATTERN SCRIBINGTOOL Clarence L. Eldh, Stockton, Calif.

Application March 28, 1947, Serial No. 737,929

3 Claims.

I This invention relates generally to a tool adapted for use by aworkman cutting a floor covering to fit a room having an irregular floorpl I The invention is directed particularly to, and it is an object toprovide, a novel hand tool for forming a pattern corresponding to afloor shape, and then transposing said pattern to a piece of linoleum orthe like for cutting to fit such floor shape.

' Another object of the invention is to provide a hand tool arranged foruse in one position to score a sheet of heavy paper, lying on a roomfloor, with the exact edge configuration of the floor shape; and inanother position, working from the scored or patterned sheet of paper,to scribe such pattern on a piece of linoleum preparatory to cutting thesame to shape.

A further object of the invention is to provide a hand tool, for thepurpose described, which comprises an elongated body having a wallengaging guide nub projecting from one end and a sheet scoring bladedepending, in longitudinally spaced relation, from the bottom of thebody, and a guide fin and scribing point projecting, in longitudinallyspaced relation, from one side of the body; the guide nub and scoringblade being usable to form the pattern on the paper sheet, and the guidefin and scribing point being usable to transpose the pattern onto thelinoleum, all as hereinafter described in detail.

A further object of the invention is to provide a practical, convenient,and readily portable pattern tool, which will be exceedingly effectivefor the purpose for which it is designed.

These objects are accomplished by means of such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claims.

In the drawings:

Fig. 1 is a perspective view from one side thereof.

Fig. 2 is a perspective View taken from the other side-of the tool.

Fig. 3 is a bottom plan view partly broken away.

Fig. 4 is a cross section on line 4-4 of Fig. 3.

Fig. 5 is a diagrammatic plan view illustrating the manner of use of thetool to score the pattern.

Fig. 6 is a diagrammatic plan view illustrating the manner of use of thetool to transpose the pattern to a piece of linoleum.

Referring now more particularly to the characters of reference on thedrawings, and at present to Figs. 1-4, inclusive, the device comprisesof the tool taken an elongated. body, indicated generally at I, roundedat its forward end on top, as at 2, for convenience of fingerengagement.

At the front end portion thereof the bottom 3 of the body I is recessedfor matching reception of a base plate 4 held in place by screws 5;

At one front corner the base plate 4 is formed with a forwardly andoutwardly projecting guide nub 6.

At the rear edge of the base plate 4 the body I is fitted with atransversely extending, rigid cross strip 1 held in place in atransverse slot in said body by means of a tongue 8 on the rear edge ofthe base plate engaging in matching relation in a notched portion of thecross strip I.

At the end adjacent the guide nub 6 the cross strip l' is formed with ascoring blade 9 which depends some distance below the bottom 3 and baseplate 4 of the body I; said scoring blade 9 being sharpened.

At the opposite end from the scoring blade 9 the cross strip I is formedwith a laterally, outwardly projecting guide fin It.

A scribing point II is engaged in a transverse bore I2 and projectslaterally outwardly from the same side of the body I as the guide finII]; the scribing point II being spaced from said guide fin Illlengthwise of the body in a rearward direction. The scribing point II isheld in place by a set screw I3.

The body'I is formed with a cavity I4 initially open to the rear end ofsaid body, but closed by a removable screw plug I5. The cavity I4provides for the storage of extra scribing points II, and if desired,strips I with the blade 9 and fin I0 thereon. I

The above described hand tool is used by a workman, for patterning afloor covering to shape, in the following manner:

In Fig. 5 there is illustrated, by diagrammatic plan, an irregular wallIB, whose wall line is indicated generally at ii. The line I! may alsorepresent the outline or'configuration of a floor supported roomfixture.

The first step, to pattern a piece of linoleum for cutting to fit theedge I1, is to lay a rough cut sheet l8 of relatively heavy buildingpaper or the like on the fioor I9. Then, with the tool in hand, bottomside down, the nub 6 is engaged with the wall line H, with the body Iprojecting outwardly therefrom at right angles. The tool is then drawnalong the wall, transversely of said tool, in the direction indicated bythe arrow in Fig. 5. With this motion of the tool, the then downwardlyprojecting blade 9 scores a line 20 on the pattern sheet 18 whichexactly follows the configuration of the wall line or edge l7.

When the score line 26 is completed the pattern sheet I8 is removed fromthe room and, as shown in Fig. 6, is superimposed directly upon a pieceof linoleum 21 which is to be out to fit the wall line H. This can bedone outside the room, Where more space is available.

With the scored pattern sheet I8 on the piece of linoleum 2I,t heworkman takes the tool in hand and disposes it in position with theguide fin H! and scribing point H projecting downwardly; such positionbeing the reverse, endwise, relative to the position of the tool as inFig. 5. In this relatively reverse position the guide fin I is disposedon the score line as with the scribing point I I bearing against thepiece of linoleum 2|. With the tool in this position it is drawn in thedirection indicated by the arrow in Fig. 6, with the guide fin i0accurately following the score line 29 on the pattern sheet I 8. At thesame time the scribing point ll cuts a line 22 on the piece of linoleum2|, which line exactly corresponds to the wall line H. In this mannerthe piece of'linoleum 2| may be cut to exact floor shape outside of theroom in which the floor covering is tobe used.

The tool thus provides a very practical, convenient, and easy-to-usemeans for the pattern cutting of fioor covering.

From the foregoing description it will be readily seen that there hasbeen produced such a device as substantially fulfills the objects of theinvention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention as defined by the appended claims.

Having thus described the invention, the following is claimed as new anduseful, and upon which Letters Patent are desired:

1. A pattern scribing tool comprising an elongated body of polygonalcross section, the bottom of the body being provided with asubstantially rectangular recess, a plate fitted into the recess andbeing detachably secured to the body, a guide nub on the plateprojecting forwardly of the body, the body being provided with atransverse slot cut into its bottom side to the rear of the recess, across strip fitted into the slot, such cross strip being provided witha. notch in its bottom edge. a'tongue on the inner edge of the plate.such tongue projecting into said notch whereby to maintain the crossstrip in position in the slot, and a scoring blade on the cross stripdepending below the bottom of the body.

2. A tool for scribing a pattern on a piece of linoleum of a size andshape to fit a room floor surface, such tool comprising an elongatedbody of polygonal cross section, a first guide element at one end of thebody adapted to be engaged with and moved along the side wall of theroom, a scoring element depending from one surface of the body in spacedrelation rearwardly of the first guide element and effective uponmovement of the tool, with the guide element against the wall, to scorea line pattern of the floor surfacev of the room upon a pattern sheetlaid on the floor of the room, a second guide element projeotinglaterally out from another surface of the body and adapted to be engagedwith and moved along the line of the pattern found on the pattern sheet,a scribing point projecting outwardly from said last named surface andspaced a distance from the second guide element equal to the distancebetween the first guide element and the scoring element, whereby thesecond guide is adapted to be moved along the outline of the patternscribed on the sheet, with the scribing element positioned to projectbeyond the outer edge of the pattern sheet and onto the surface of apiece of linoleum below the pattern sheet, and to scribe a pattern onthe linoleum which will conform with the size and shape of the floorsurface of the room; and a plate detachably mounted on said one surfaceof the body adjacent one end of the body, the first guide element beingintegral with said plate and projecting beyond said one end of the body.

3. A tool for scribinga pattern on a piece of linoleum of a size andshap to fit a. room floor surface, such tool comprising an elongatedbody of polygonal cross section, a first guide element at one end of thebody adapted to be engaged with and moved along the side wall of .theroom, a scoring element depending from one surface of the body in spacedrelation rearwardly of the first guide element and effective uponmovement of the tool, with the guide element against the wall, to scorea line pattern of the floor surface of the room upon a patternsheet'laid on the floor of the room, a second guide element projectinglaterally out from another surface of the body and adapted to be engagedwith and moved along the line of the pattern found on the pattern sheet,a scribing point projecting outwardly from said last named surface andspaced a distance from the second guide element equal to the distancebetween the first guide element and the scoring element, whereby thesecond guide is adapted to be moved along the outline of the patternscribed on the sheet. with the scribing element positioned to projectbeyond the outer edge of the pattern sheet and onto the surface of apiece of linoleum below the pattern sheet, and to scribe a pattern onthe linoleum which will conform with the size and shape of the floorsurface of theroom; and a rigid cross'strip recessed into the'bod'y',the scoring element and the second guide element being integral withsaid cross strip, a removable plate on said one surface of the bodyadjacent one end of the body, the first guide element comprising a nubformed integral with said plate and projecting beyond said one end ofthe body, and means on the plate releasably maintaining the strip inposition in the body.

CLARENCE L. ELDH.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

